heart valve vs pump

heart valve and pump both are nouns.

Word	Noun	Adjective	Verb	Adverb
heart valve	Yes	No	No	No
pump	Yes	No	Yes	No

heart valve (noun)	pump (noun)
an implant that replaces a natural cardiac valve	a mechanical device that moves fluid or gas by pressure or suction
a valve to control one-way flow of blood	a low-cut shoe without fastenings
	the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body

heart valve (verb)	pump (verb)
	question persistently
	deliver forth
	operate like a pump; move up and down, like a handle or a pedal
	raise (gases or fluids) with a pump
	draw or pour with a pump
	flow intermittently
	move up and down
	supply in great quantities